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| Health risk assessment of geochemical environment n the water and soil system of Huanghua region |
| XU Shan |
| Hebei Institute of Geological Survey, Shijiazhuang 050081, China |
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Abstract To analyze and evaluate the risk of the serious pollution of the elements in soil, grain and water of Huanghua region, the authors delimited the risk management zoning and put forward the countermeasures. According to the elements that exceed the standards in soil, grain and water, the authors selected eleven primary elements as indicators, which were Cd, Cu, Hg, Pb, Zn, As, Ni, F, I, Se, and Cr. The exposure dose model based on daily human intake of unit weight (CDI) was developed, and the risk level was graded by risk quotient method. The risk management zoning was delimited by superimposing risk areas of indicators. The results show that the HQ values of F are all higher than 1 in eleven indicators. The HQ values of I that are higher than 1 reaches 52%. The HQ values of the elements are almost all smaller than 1 except for Pb: only one Pb sample has HQ value higher than 1. The comprehensive high-risk areas are located in the southwest of Huanghuain Changguo-Jiucheng-Yangerzhuang area, and the second high-risk areas are located in the north of Qijiawu and Nanpai River, with the risk caused by groundwater.
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Received: 25 July 2016
Published: 20 June 2017
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